diff mbox series

[net,2/8] net: stmmac: xgmac: Detect Hash Table size dinamically

Message ID e521e901f3bbe8cd72d8b1492709072f21ee7c84.1569569778.git.Jose.Abreu@synopsys.com (mailing list archive)
State Mainlined
Commit c11986b9fa74cd3ce218e0ca7e0de88d30e6f497
Headers show
Series net: stmmac: Fixes for -net | expand

Commit Message

Jose Abreu Sept. 27, 2019, 7:48 a.m. UTC
Since commit b8ef7020d6e5 ("net: stmmac: add support for hash table size
128/256 in dwmac4"), we can detect the Hash Table dinamically.

Let's implement this feature in XGMAC cores and fix possible setups that
don't support the maximum size for Hash Table.

Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>

---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     | 1 +
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c | 1 +
 2 files changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 5923ca62d793..f7eb06f8fb37 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -122,6 +122,7 @@ 
 #define XGMAC_HWFEAT_GMIISEL		BIT(1)
 #define XGMAC_HW_FEATURE1		0x00000120
 #define XGMAC_HWFEAT_L3L4FNUM		GENMASK(30, 27)
+#define XGMAC_HWFEAT_HASHTBLSZ		GENMASK(25, 24)
 #define XGMAC_HWFEAT_RSSEN		BIT(20)
 #define XGMAC_HWFEAT_TSOEN		BIT(18)
 #define XGMAC_HWFEAT_SPHEN		BIT(17)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 53c4a40d8386..965cbe3e6f51 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -380,6 +380,7 @@  static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 	/* MAC HW feature 1 */
 	hw_cap = readl(ioaddr + XGMAC_HW_FEATURE1);
 	dma_cap->l3l4fnum = (hw_cap & XGMAC_HWFEAT_L3L4FNUM) >> 27;
+	dma_cap->hash_tb_sz = (hw_cap & XGMAC_HWFEAT_HASHTBLSZ) >> 24;
 	dma_cap->rssen = (hw_cap & XGMAC_HWFEAT_RSSEN) >> 20;
 	dma_cap->tsoen = (hw_cap & XGMAC_HWFEAT_TSOEN) >> 18;
 	dma_cap->sphen = (hw_cap & XGMAC_HWFEAT_SPHEN) >> 17;